CN204884662U - Middling pressure metallic sheath power cable - Google Patents

Middling pressure metallic sheath power cable Download PDF

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Publication number
CN204884662U
CN204884662U CN201520600228.4U CN201520600228U CN204884662U CN 204884662 U CN204884662 U CN 204884662U CN 201520600228 U CN201520600228 U CN 201520600228U CN 204884662 U CN204884662 U CN 204884662U
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China
Prior art keywords
metallic sheath
aluminium
conductor
layer
fire
Prior art date
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Active
Application number
CN201520600228.4U
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Chinese (zh)
Inventor
孙永哲
张治刚
倪穗
周宇
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Hangzhou Cable Co Ltd
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Hangzhou Cable Co Ltd
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Priority to CN201520600228.4U priority Critical patent/CN204884662U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

The utility model relates to the technical field of cables, a middling pressure metallic sheath power cable is disclosed, its cross -section includes conductor, conductor shield, insulating layer, insulation screen, semiconduction block water buffer layer, metallic sheath, insulating oversheath from inside to outside in proper order, is equipped with semiconductive nylon tape between conductor and the conductor shield, is equipped with composite aluminium -plastic tape between metallic sheath and the insulating oversheath, is equipped with the fire -resistant covering that winds between metallic sheath and the composite aluminium -plastic tape, insulating layer, insulating oversheath are made by crosslinked polyethylene, metallic sheath is the aluminium cover, and the inner wall of aluminium cover is smooth, and the outer wall of aluminium cover is equipped with a plurality of radiating grooves that distribute along the axial, the cross -section semicircular in shape of radiating groove, and metallic sheath is equipped with the pitch layer with fire -resistant winding between the covering. The utility model discloses have waterproof, heat resistance good, comprehensive properties is stable, long service life's beneficial effect.

Description

Middle pressure metallic sheath power cable
Technical field
The utility model relates to field of cable technology, particularly relates in one and presses metallic sheath power cable.
Background technology
Cable has power cable, control cables, compensating cable, shielded type cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resisting cable, shipboard cable, mining cable, aluminium alloy cable etc.They are all made up of sub-thread or stranded conductor and insulating barrier, are used for connecting circuit, electrical equipment etc.Waterproof, the decay resistance of current cable are all comparatively general, and when cable uses under high temperature, high humidity, corrosive environment, the useful life of cable can much smaller than normal service life.
Utility model content
The utility model is in order to solve the problem of cable waterproof of the prior art, heat resistance difference, and provide a kind of waterproof, heat resistance is good, combination property is stablized, the middle pressure metallic sheath power cable of long service life.
To achieve these goals, the utility model adopts following technical scheme:
Metallic sheath power cable is pressed in one, its cross section comprises conductor, conductor shield, insulating barrier, insulation screen, semiconductive water-blocking buffer layer, metallic sheath, insulating outer protective cover from inside to outside successively, semiconductive nylon tape is provided with between described conductor and conductor shield, be provided with aluminium-plastic tape between described metallic sheath and insulating outer protective cover, between described metallic sheath and aluminium-plastic tape, be provided with fire-resistant lapping layer; Described insulating barrier, insulating outer protective cover are made up of crosslinked polyethylene.
Crosslinked polyethylene is by the cross-linking radiation of electronics a fluid stream, make between polyethylene molecule covalent bond form a netted three-dimensional structure, and define the three-dimensional lattice being less than hydrone, improve rapidly the performance of polyvinyl resin, improve series of physical, the chemical properties such as thermal deformation, resistance to wear, chemical proofing, stress crack resistant, thus overall heat-resisting, wear-resisting, the fire resistance improving cable, improve block-water performance simultaneously; Semiconductive nylon tape plays the effect of electric field shielding, and semiconductive nylon tape can be good at being connected with conductive shielding layer simultaneously, simultaneously effective gap of filling between conductor and conductive shielding layer; Fire-resistant twining package tape plays heat-resisting, fireproof performance, and aluminium-plastic tape plays waterproof and strengthens tension compressive property, and therefore this kind of cable combination property is much better than normal cable, and in high temperature, high humidity environment, useful life is longer than normal cable a lot.
As preferably, described metallic sheath is aluminium cover, the inner wall smooth of described aluminium cover, and the outer wall of described aluminium cover is provided with some radiating grooves distributed vertically, and the cross section semicircular in shape of described radiating groove, is provided with bitumen layer between described metallic sheath and fire-resistant lapping layer.Radiating groove adds the external surface area of aluminium cover, strengthens conductor heat dispersion, improves conductor current-carrying performance; Bitumen layer plays a protective role to metallic sheath, prevents metallic sheath from getting rusty, and keep the insulation of metallic sheath outer surface, bitumen layer also plays being tightly connected between metallic sheath and fire-resistant lapping layer, prevents from there is gap between metallic sheath and fire-resistant lapping layer simultaneously.
As preferably, the outside of described insulating barrier is provided with some long slot bores distributed vertically, and adjacent two platoon leader's slotted eyes are dislocatedly distributed, and are filled with pitch in described long slot bore.Thickness of insulating layer is comparatively large, and phenomenon of expanding with heat and contract with cold is obvious, and long slot bore can effectively slow down expanding with heat and contract with cold of insulating barrier, and in long slot bore, filled bitumen is for the ease of the air in long slot bore is drained.
As preferably, described fire-resistant lapping layer is Mica tape layer.Mica tape layer fire resistance is good, the high temperature that ability is about 800 degree, can play a good protection to conductor and insulating barrier.
Therefore, the utility model has waterproof, heat resistance is good, and combination property is stablized, the beneficial effect of long service life.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is metallic sheath and internal structure schematic diagram thereof.
In figure: conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, semiconductive water-blocking buffer layer 5, metallic sheath 6, insulating outer protective cover 7, semiconductive nylon tape 8, aluminium-plastic tape 9, fire-resistant lapping layer 10, bitumen layer 11, long slot bore 30, pitch 31, radiating groove 60.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Metallic sheath power cable is pressed in one as shown in Figure 1, its cross section comprises conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, semiconductive water-blocking buffer layer 5, metallic sheath 6, insulating outer protective cover 7 from inside to outside successively, semiconductive nylon tape 8 is provided with between conductor 1 and conductor shield 2, semiconductive nylon tape plays the effect of electric field shielding, semiconductive nylon tape can be good at being connected with conductive shielding layer simultaneously, simultaneously effective gap of filling between conductor and conductive shielding layer, aluminium-plastic tape 9 is provided with between metallic sheath 6 and insulating outer protective cover 7, fire-resistant lapping layer 10 is provided with between metallic sheath 6 and aluminium-plastic tape 9, fire-resistant lapping layer 10 in the present embodiment is Mica tape layer, the high temperature that can bear 800 degree of Mica tape layer, insulating barrier, insulating outer protective cover is made up of crosslinked polyethylene, crosslinked polyethylene is by the cross-linking radiation of electronics a fluid stream, make between polyethylene molecule covalent bond form a netted three-dimensional structure, and define the three-dimensional lattice being less than hydrone, improve rapidly the performance of polyvinyl resin, improve thermal deformation, resistance to wear, chemical proofing, the series of physicals such as stress crack resistant, chemical property, thus overall raising cable is heat-resisting, wear-resisting, fire resistance, improve block-water performance simultaneously.
As shown in Figure 2, metallic sheath 6 is aluminium cover, the inner wall smooth of aluminium cover, the outer wall of aluminium cover is provided with some radiating grooves 60 distributed vertically, the cross section semicircular in shape of radiating groove, is provided with bitumen layer 11 between metallic sheath 6 and fire-resistant lapping layer 10, aluminium cover plays armouring effect, can effective anti-cable axially, radial pulling force pressure, aluminium cover is also effective simultaneously plays thermolysis to conductor; The outside of insulating barrier 3 is provided with some long slot bores 30 distributed vertically, and adjacent two platoon leader's slotted eyes are dislocatedly distributed, and are filled with pitch 31 in long slot bore 30.Thickness of insulating layer is comparatively large, and phenomenon of expanding with heat and contract with cold is obvious, and long slot bore can effectively slow down expanding with heat and contract with cold of insulating barrier, and in long slot bore, filled bitumen is for the ease of the air in long slot bore is drained.Therefore, the utility model has waterproof, heat resistance is good, and combination property is stablized, the beneficial effect of long service life.

Claims (4)

1. press metallic sheath power cable in one kind, its cross section comprises conductor, conductor shield, insulating barrier, insulation screen, semiconductive water-blocking buffer layer, metallic sheath, insulating outer protective cover from inside to outside successively, it is characterized in that, semiconductive nylon tape is provided with between described conductor and conductor shield, be provided with aluminium-plastic tape between described metallic sheath and insulating outer protective cover, between described metallic sheath and aluminium-plastic tape, be provided with fire-resistant lapping layer; Described insulating barrier, insulating outer protective cover are made up of crosslinked polyethylene.
2. middle pressure metallic sheath power cable according to claim 1, it is characterized in that, described metallic sheath is aluminium cover, the inner wall smooth of described aluminium cover, the outer wall of described aluminium cover is provided with some radiating grooves distributed vertically, the cross section semicircular in shape of described radiating groove, is provided with bitumen layer between described metallic sheath and fire-resistant lapping layer.
3. middle pressure metallic sheath power cable according to claim 1 and 2, is characterized in that, the outside of described insulating barrier is provided with some long slot bores distributed vertically, and adjacent two platoon leader's slotted eyes are dislocatedly distributed, and are filled with pitch in described long slot bore.
4. middle pressure metallic sheath power cable according to claim 1, it is characterized in that, described fire-resistant lapping layer is Mica tape layer.
CN201520600228.4U 2015-08-11 2015-08-11 Middling pressure metallic sheath power cable Active CN204884662U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520600228.4U CN204884662U (en) 2015-08-11 2015-08-11 Middling pressure metallic sheath power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520600228.4U CN204884662U (en) 2015-08-11 2015-08-11 Middling pressure metallic sheath power cable

Publications (1)

Publication Number Publication Date
CN204884662U true CN204884662U (en) 2015-12-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520600228.4U Active CN204884662U (en) 2015-08-11 2015-08-11 Middling pressure metallic sheath power cable

Country Status (1)

Country Link
CN (1) CN204884662U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110473660A (en) * 2019-08-09 2019-11-19 中辰电缆股份有限公司 Pressure heat dissipation cable, cable heat sink material and preparation method thereof in one kind

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110473660A (en) * 2019-08-09 2019-11-19 中辰电缆股份有限公司 Pressure heat dissipation cable, cable heat sink material and preparation method thereof in one kind

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